\documentclass{article}
\usepackage{amssymb,amsmath,amscd,concmath}
\pagestyle{empty}
\begin{document}
\begin{equation*}h = (metal+crystal) \times {\frac {0.5^{level nanite factory}} {2500 \times (1+level of robotic factory)}} \end{equation*}
\end{document}
